I'm really nervous and idk what to do

So last month I had fun with my bf (not sex but you know) and then my period came, with heavy flow, cramps, blood clots, etc for like 7 days. Now, my period is due today but there's still nothing on my pad and now I'm worried that it won't come or that I'm pregnant, even if this month I didn't see my bf but still, I can't stop thinking about "what if I'm pregnant??"